Hi,
I'm new to osCommerce, Worldpay and PHP, and I'm currently testing out a few things using the test mode of Worldpay.
I was testing out the cart, and on the last page before I get directed to Worldpay, I did a 'view source' on internet explorer, and noticed that values such as 'instId' and the final cost is on there.
Isn't this a problem as someone could easily change these values? or is there something i'm not understanding?
Thanks for your help.
Yickman